Bug: b/72320670
Test: Verified by unit/integration tests on sailfish
Merge from Widevine master of http://go/wvgerrit/41240
Previously, OEMCertForbiddenPaddingScheme checks to see if the OEMCrypto
returns a short buffer error on GenerateRSASignature and then resizes it
accordingly if so. If the OEMCrypto does not return this error first
(and instead complains about the padding scheme), the assertion will
return false since the signature has size 1. This CL changes that so it
doesn't matter which error the OEMCrypto returns first.
Change-Id: I2fd3a3814ff3722fd40ae6a3bcbd65293c9baed7